Boring-machine.



UNTTED STATES Patented August 2, 1904.

PATENT OFFICE.

BORING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 766,568, dated August2, 1904.

Application filed 001301381 30, 1903. Serial No, 179,140. No model.)

To (1/7] "III/077D it may (v ii/(Writ:

Be it known that I, FREDERICK CLYDE ZEEK, a citizen of the UnitedStates, and a resident of Muncie, in the county of Delaware and State ofIndiana, have invented a new and Improved Boring-Machine, of which thefollowing is a full, clear, and exact description.

My invention relates to certain novel and useful improvements inboring-machines, and specifically appertains to a mechanism of the typereferred to designed especially for use in boring holes in the joists ofceilings or floors for the passage of concealed electric wires. Incarrying out the present invention I have in view the provision of amechanism of this class which will be simple in its construction andembodying the desired and essential features of durability andconvenience, especially the latter, inasmuch as my machine may be placedso as to bore quickly and properly a plurality of openings or holes injoists spaced apart at varying distances.

A further object of the invention is to provide an improved brace forthe main portion of the machine, so that the throw or movement of suchmain portion may be limited.

Still another object of this invention is to provide a plurality ofboring-bits and a novel means for driving or rotating such bits, saidmeans being mounted upon or secured to a movable frame, which frame alsoperforms the function of a lever.

"ith the above-recited objects and others of a similar nature in view myinvention consists in the construction, combination, and arrangement ofparts, as is described in this specification, illustrated in theaccompanying drawings, and set forth in the appended claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a perspective view of a machine embodying my improvements,said view also illustrating the manner of applying the same when in use.Fig. 2 is a bottom plan view of the boring-bits, the mechanism fordriving the same, and the immediate connecting parts; and Fig. 3 is avertical sectional view taken through the lower portion of the machine,

showing in elevation one of the boring-bits and the means for drivingsaid bit.

Referring now to the accompanying drawings in detail, the letter Adesignates a horizontal frame or supporting member formed in the presentinstance of two bars or side members 5 5, said members being connectedthrough the medium of the cross-blocks 6 6. As will be seen by referenceto Fig. 1, this frame is designed to be placed upon and supported by thejoists of a building, such joists being designated by the letters at and1 in the aforesaid Fig. 1.

Depending from the supporting-frame A and rigidly connected theretothrough the medium of hanger-bolts 7 are wooden hangerframes 8 8, eachof said frames carrying at its lower end a bearing bracket-frame 9 forthe support of a shaft portion 10 of the cutter-bit 11, and, as will beobserved in the present instance, I employ two of such cutter-bits. Itis further to be noted that said bits are mounted to turn or revolvefreely in said bracket-hangers, and power is imparted to the samethrough the medium of the mechanism hereinafter described. At the end ofeach of the shafts 10 of the bit is secured a vertical miter gearwheel12, said gears meshing with double miter or bevel gears 13. Thebevel-gears 13 are loose upon a relatively short shaft 14, rigidlysupported by the lugs 9 of the hanger members 9, while a bracket 15 issecured at 16 to one end of a long driving rod or shaft 17, the bracket15 being supported by said shaft 14. The shaft 17, which is adapted torevolve as hereinafterdescribed, extends through the bracket 15 andcarries at its lower end a hori zontally-disposcd bevel-gear 18, whichin turn meshes with both of the double bevel-gears 13 13 and impartingmotion to said gears drives the bits 11 11 through the medium of thegears 12 1). at the ends of the shafts 10.

The main driving rod or shaft 17 is also connected with a relativelylarge lever-frame 19, and at its upper end said rod 17 passes through anaperture in a lug 21, carried by a bracket 22. The upper end of theshaft 17 is also provided with a bevel-gear 23, in mesh with abevel-gear 24, mounted upon a stubshaft 25, supported in a bracket 22,said gear 1 upper part of the lever-frame 19.

24 being formed rigid with a crank-handle 26,.

through the medium of which motion is imparted to the shaft. In order tosupport the lever-frame 19 in any suitable position, I providea bracketconsisting in the present in stance of a tubular member 27, pivoted, asat 28, to a bracket 29, connected with the lever 19, and an arm 30,designed to telescope or slide within the. tubular member, the armcarrying at its free end a bifurcated claw or foot 31, designed toengage with a joist when the mechanism is in use.

Secured to the claw 31 is a chain or cable 32, designed to beemployed'for the purpose of lifting or adjusting the brace without thene- 1 cessity of the operator stooping to lift the latter, said chainbeing connected at 33 to the For the purpose of further assisting in themanipulation and actuation of the machine I secure a handle 34 to theupper portion of the leverframe 19, said handle being employed to assistin swinging the lever-frame into any desired position.

From the above description, taken in connection with the drawings, themanner of employing my machine will be readily apparent. The horizontalframe carrying the bit-hangers is placed transversely of the joists tobe operated upon, and the lever-frame 19 is then swung backward, whichmovement throws or imparts a forward thrust to the bits. W'hen thelatter come in contact with the joists to be bored, the hook of thesupportingbracket is permitted to rest upon an adjacent joist, and thelever-frame 19 is then held in proper position. The crank-handle 26 isthen actuated by the operator and a rotary motion is imparted to thebits through the medium of the bevel-gears, the long shaft 17, and thegearing at the'end thereof connected with the shafts of the bits. Thehole or boring made with this machine will extend in a direct linetransversely through the board or joist, and it is not necessary, as iscommonly the case, to bore the hole at an inclination or angle throughsuch joists. After the bits have passed through the wood and the boringis made the lever-frame 19 is swung forward, which movement will removethe bits from the joists and the operation of boring new holes may beproceeded with.

It will be observed that I have provided an exceedingly simple machineand one which possesses many advantages over similar mechanisms of thecharacter now in general use, and While I have herein shown anddescribed one particular embodiment of the invention it will of coursebe understood that I do not limit myself to all the precise detailsthereof, as there may be modifications in certain respects withoutdeparting from the essential features of the invention or sacrificingany of the advantages thereof.

Having thus described my invention, I claim as new and desire to secureby Letters Patent-- 1. The combination of asupporting-frame, hangersconnected thereto, a plurality of bits mounted in said hangers, atransverse shaft carrying gearwheels in mesh with gearwheels on thebit-shafts, a bracket mounted on the ends of said transverse shaft, adrive rod or shaft extending through the bracket and provided with agear in mesh with the gears on the transverse shaft, and means forimparting a rotary motion to said drive-rod.

2. The combination of a supporting-frame, a plurality of bits supportedtherefrom, a fixed transverse shaft carrying loosely-mounted gear-wheelsin mesh with gear-wheels on the bit-shafts, a bracket supported by thesaid transverse shaft, a drive-shaft extending through the bracket andhaving a gear in mesh with the gears on the transverse shaft, and alever-frame connected with the said bracket and supporting saiddrive-shaft.

3. The combination of a supporting-frame,

hangers connected to said supporting-frame, a plurality of bits mountedin the hangers, a transverse shaft supported by said hangers andcarrying gear-wheels in mesh with gearwheels on the bit-shafts, meansfor driving said gear-wheels, a bracket mounted on the ends of saidtransverse shaft, a lever-frame secured at its lower end to the saidbracket, and a brace pivotally connected with the leverframe.

4. The combination of a supporting-frame, a plurality of boring-bitssupported therefrom, a lever-frame having a bracket at its lower endpivotally connected with the supporting-frame, and means including arevoluble drive-shaft, for imparting a rotary motion to said bits, thesaid drive-shaft being supported in said lever-frame.

5. The combination of a frame, a plurality of boring-bits suspendedtherefrom, means for imparting a rotary motion to said bits, said meansincluding a revoluble drivingshaft, a pivoted lever-frame supportingsaid shaft, a support pivotally connected with said lever-frame, andmeans connected with said support for lifting the same.

6. The combination of a frame, a plurality of boring-bits revolublysupported from said frame, means for imparting a rotary motion to saidbits, and means for imparting a thrust motion to the bits to move thesame toward and from the material to be bored, the said means comprisinga lever-frame, and a brace for supporting the lever-frame, and a chainor cable connected with the upper part of the lever-frame and secured tothe brace for lifting the latter.

7. The combination of a horizontally-arranged frame, a hanger-boxsuspended therefrom, a boring-bit carried by said hanger-box, means forimparting a rotary motion to said bit. a lever-frame for thrusting thebit toward 1 and from the work to be operated upon, the lever-framebeing connected at its lower end with the hanger-box, a tubular socketor sleeve pivoted to said lever, and an arm carrying a claw memberslidably connected with said tubular socket, the socket and arm memberforming a brace for the frame, substantially as described.

8. The combination of a frame, a bit sup: ported therefrom, a bevel-gearsecured to the shaft of the bit, a drive rod or shaft, a second gearcarried at the lower end of said driverod, a transverse shaft supported'on the frame, and carrying a double bevel-gear inter-meshing with thegear of the bit and the gear of the drive-rod, a lever-frame pivoted onsaid transverse shaft and supporting the said driverod, and means forimparting a revoluble motion to said drive-rod, said means comprising abevel-gear at the upper end thereof, and an actuating member mounted toturn on the lever-frame and carrying a gear-wheel intermeshing with thelast-mentioned bevel-gear, substantially as set forth.

9. The combination of a supporting-frame, hangers suspended therefrom,abracket-frame carried by the hangers, bits mounted to turn in thebracket-frame, a transverse shaft journaled in lugs on the bracket-frameand provided with gear-wheels in mesh with gearwheels on the ends of thebit-shafts, a bracket 1 supported on the ends of the transverse shaft, adrive-rod extending through said bracket and provided at its end with agear in mesh with the gears on the transverse shaft, a support for saiddrive-shaft, and means for imparting a rotary motion to saiddrive-shaft.

10. The combination of a horizontally-arranged supporting-frame, hangerssuspended from said frame, boring-bits carried by said hangers,gear-wheels secured to the shafts of the bits, a transverse shaftjournaled in the hangers and carrying gear-wheels in mesh with the gearson the bit-shafts, a bracket supported on the ends of said transverseshaft, a lever-frame connected at its lower end with the said bracket, arod or shaft supported on the lever-frame and extending at its lower endthrough the said bracket, the said rod carrying at its lower end agear-wheel in mesh with the gear-wheels on the said transverse shaft,means for driving the said rod, and a pivoted brace for the lever-frame.

11. The combination of a horizontally-arranged supporting-frame, aplurality of bits supported therefrom, means for imparting a rotarymotion to said bits, said means including a relatively long revolvingrod or shaft and means for imparting a rotary motion to said shaft, anda lever-frame supporting said shaft and mounted at its lower end to haveswinging motion on the said supportingframe.

ln testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FREDERICK CLYDE ZEEK.

\Vitnesses:

\VILLIAM B. \VATsoN, LEWIS J. HICKMAN.

